The part we got at Camping World will have to go back tomorrow.  The supply line comes straight up out of the floor right at the area of the valve and has a right angle fitting before then having the 1/2" female pipe thread fitting to go onto the valve.  The part they had was a good 2 1/2" long and would have really put things into a bind on the plastic part from CW.  Rather than risk another break, we did our normal Oklahoma Panhandle "engineering" by buying a 20" hose with a 1/2" female pipe fitting on one end and then we cut the faucet fitting off of the other end.  Using a bit of soap, Jo slipped the hose up onto the part of the right-angle that the original fitting was on and we then clamped it down with a small hose clamp.

Having the 20" hose allows us to have a loop in the hose to allow for some flex if it is needed.  It isn't pretty, but it's functional and we have toilet water back.  If anyone would like to have a laugh at our repair, have a look.

First, the right-angle fitting from which the valve fitting came.

Next, the 1/2" female pipe thread fitting that broke off

This is the valve inlet on the Dometic Sealand toilet valve.  In that photo, one can see how close the incoming water line is in relationship to the valve inlet connection.  That is why the

Camping World part was too long to work without putting everything into a bind.

Now, the finished repair, but just without having the valve cover being replaced onto its housing.

Jo is happy again, and I must be off to finish up another minor modification that I've been working on; that being to replace the screws holding the air conditioner return vent covers with something that doesn't have to be taken clear out for each time we want to clean the filters.

Terry

(The following comment is actually in answer to a comment above by Sean and igotjam's last comment and is also a duplicate of a comment I gave to another person on another forum where I participate and they also mentioned that they were glad that we were not at work when the line blew.  I just wanted both of them to know I thank them for their comments as they will likely insure that I start shutting off the water if we are gone for any length of time.)

Thanks so much for that idea. I mentioned this to Jo last night and I now think she is officially paranoid about the thought of water running when we are gone. It may very well be that she will insist on me turning the water off to the coach whenever we are away from it from now on.

I do think she is now a happy person that I am a night-owl and am one to go to bed late. She was actually closer to the bathroom and she heard nothing because of the noise of the oscillating fan we keep in the bedroom.

However, I do want to thank you for the idea. We have a two week vacation coming up at the end of the month and won't be taking the coach with us, so I will definitely shut off the water for that period of time.

In answer to Cheryl, I agree with igotjam in that it was likely just a part failure.  However, I am certainly glad that we purchased and installed a pressure regulator on our water supply line here at the mobile home park where we currently are.  The water pressure here is so high that we were previously getting water leaks at all the faucet connections where the water lines attach to the faucets.  Initially, we purchased one of those "inline" things that limit one to 45 psi of water, and it was worthless.  We've since bought a Watts pressure regulator and it is adjustable, so our water pressure is just under 60 psi.

Should any newer members be interested in the pressure regulator that we have, here is a link to my blog posting about it.  The review makes some comparisons, but they are comparisons between the 45 psi unit and the Watts, not a comparison to the high water pressure that is actually here.  I mention this simply because it is possible that higher water pressure would have caused the failure even sooner.

Review of Watts 263A Water Pressure Regulator

Terry